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Pakistan Journal of Biological Sciences
  Year: 2000 | Volume: 3 | Issue: 10 | Page No.: 1668-1669
DOI: 10.3923/pjbs.2000.1668.1669
Biology of Helicoverpa armigera (Hubner) Reared in Laboratory on Natural Diet
Abida Nasreen and Ghulam Mustafa

Abstract:
Helicoverpa armigera (Hubner) (Lepidoptera: Noctuidae) completed its larval stage in 17.325±0.326 days passing through six instars under laboratory protocol, 26±1 °C, 60-70% RH and 16 hours` daylight. The larvae moulted for 2nd instar, two days after hatching from eggs. Average stadiel periods for 2nd, 3rd, 4th, 5th, and 6th instars were 2.07, 2.15, 2.48, 3.12, 3.55 and 3.95 days respectively. The last larval stage did not moult but was contracted and shortened into grub like pre-pupal stage. The average length measured for each instar (first to sixth) was 3.4, 4.6, 9.7, 17, 28.35, 36.85 mm respectively. The average pupal period was 13.2 days for female and 15.4 days for male. Fecundity of moths fed on sucrose solution was significantly higher than water fed females. The unfed females laid few eggs none was viable.
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How to cite this article:

Abida Nasreen and Ghulam Mustafa , 2000. Biology of Helicoverpa armigera (Hubner) Reared in Laboratory on Natural Diet. Pakistan Journal of Biological Sciences, 3: 1668-1669.

DOI: 10.3923/pjbs.2000.1668.1669

URL: http://scialert.net/abstract/?doi=pjbs.2000.1668.1669

 
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